Don't listen to these guys. No amps will turn you away. Their clientele cover the entire spectrum of the rainbow. The few mongers I've bumped into have been white, Latino, Asian, Indian....you name it.
The way to avoid looking suspicious is to do some #metoo things to the ladies, that officials aren't supposed to do. Rub their ass, squeeze a titty, put their hand on your dick. Get naked once you get in the room. Things that make regular women uncomfortable will make these ladies very comfortable.
I know it's your first time so I'm making it sound easier than it will be for you, but just relax. We all are nervous our first few times.
Good luck can't wait to read your first review......